Lamp



FIG. 1 is a side view of a lamp showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is the other side view thereof;

FIG. 4 is back view thereof;

FIG. 5 is top view thereof; and,

FIG. 6 is a bottom view thereof. 

The ornamental design for a lamp, as shown. 